Comments: Considered one of the more difficult species of Mammillaria. A very open potting mix that has added limestone and a somewhat small pot will be of benefit; those along with careful watering and high light levels will increase the grower?s success. Be sure to keep the plant well above the actual soil, and support it with a layer of open gravel as a top dressing to keep the plant body as dry as possible, both to avoid rot and to keep the spines unstained.